https://stream.echo6.co/videos/watch/0245b170-a11e-49ee-bee0-564e1f120618 This 2005 Mercury no-start had already been through three ECMs and a pile of parts before it got to us. The scan tool gives us a direction right away, but this case is a good reminder that codes do not replace basic testing. Beau and I work through spark, injector pulse, fuel pressure, fuel pump current, and the anti-theft question without jumping to conclusions. This one is all about no-start fundamentals and proving the fault before replacing more parts. Related Videos: Ford Electronic Returnless Fuel System Diagnosis (Part 1) https://youtu.be/Rwve6lXriO4 Ford Electronic Returnless Fuel System Diagnosis (Part 2) https://youtu.be/u342IRRJ5bk Intermittent Low Power/Lean Conditions [2006 Ford F150 Electronic Returnless Fuel System] https://youtu.be/f2p0VX9eYYg 🔧 Looking for Deeper Training? Whether you're a DIYer, an aspiring tech, or a working technician, ScannerDanner Premium gives you in-depth diagnostic training built around real testing and real troubleshooting: 👉 Join Here – 14 Days for $1 https://www.scannerdanner.com/join-scannerdanner-premium.html On ScannerDanner Premium, you'll get: *In-depth classroom lectures based on the material in my book *Case studies with real vehicles brought into class *Troubleshooting using proven diagnostic methods *Access to our private forum *Fundamental training in automotive electrical, electronics, and drivability diagnostics 📘 Want to Learn More About Diagnostics? Check out my field manual, Engine Performance Diagnostics, available as both an eBook and paperback at: 👉 https://linktr.ee/scannerdanner ScannerDanner Tools: https://linktr.ee/scannerdanner 0:00 2005 Mercury no-start after multiple ECMs 1:04 No-start fundamentals and initial scan data 2:27 PATS code, no fuel pressure, and basic checks 4:06 Spark test and added fuel test 5:35 Injector pulse testing before condemning the pump 8:29 Fuel pump current testing at the inertia switch 12:17 Tank removal and failure found 15:03 New pump installed… now why is current so low? 17:28 Pulse-width-modulated fuel pump control explained 20:14 Fuel pump RPM calculation and returnless system notes 22:00 Fuel leak safety check after repair 23:18 Tech tip: fuel pump module control and current flow ⚠️ Disclaimer: ScannerDanner LLC is not responsible for misuse, unauthorized changes, or incorrect application of any information provided. Always follow proper safety protocols when using tools, equipment, or procedures discussed in this video. Use this content at your own risk. Wed, 17 Jun 2026 19:12:49 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/0245b170-a11e-49ee-bee0-564e1f120618 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.